Hi, I have heard that you can get pregnant while on the pill. I m on Ortho Tri Cyclen. I skipped a pill and had sex the day I skipped the pill. Then the next day and so on I continued taking the pill. I am now at the stage where I m on my period. I ve heard you can also have a period while you re pregnant. But, today is my fifth day of being on my period, today I ve felt sick and nauseous. My period got lighter today, like its about to stop. I usually go seven days. Does it sound like I could be pregnant?